[RFC PATCH v3 14/20] net: page pool: add io_uring memory provider
From: David Wei <hidden>
Date: 2023-12-19 21:04:18
Also in:
io-uring
Subsystem:
networking [general], page pool, the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Jesper Dangaard Brouer, Ilias Apalodimas, Linus Torvalds
From: Pavel Begunkov <asml.silence@gmail.com> Allow creating a special io_uring pp memory providers, which will be for implementing io_uring zerocopy receive. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: David Wei <redacted> --- include/net/page_pool/types.h | 1 + net/core/page_pool.c | 6 ++++++ 2 files changed, 7 insertions(+)
diff --git a/include/net/page_pool/types.h b/include/net/page_pool/types.h
index fd846cac9fb6..f54ee759e362 100644
--- a/include/net/page_pool/types.h
+++ b/include/net/page_pool/types.h@@ -129,6 +129,7 @@ struct mem_provider; enum pp_memory_provider_type { __PP_MP_NONE, /* Use system allocator directly */ PP_MP_DMABUF_DEVMEM, /* dmabuf devmem provider */ + PP_MP_IOU_ZCRX, /* io_uring zerocopy receive provider */ }; struct pp_memory_provider_ops {
diff --git a/net/core/page_pool.c b/net/core/page_pool.c
index 9e3073d61a97..ebf5ff009d9d 100644
--- a/net/core/page_pool.c
+++ b/net/core/page_pool.c@@ -21,6 +21,7 @@ #include <linux/ethtool.h> #include <linux/netdevice.h> #include <linux/genalloc.h> +#include <linux/io_uring/net.h> #include <trace/events/page_pool.h>
@@ -242,6 +243,11 @@ static int page_pool_init(struct page_pool *pool, case PP_MP_DMABUF_DEVMEM: pool->mp_ops = &dmabuf_devmem_ops; break; +#if defined(CONFIG_IO_URING) + case PP_MP_IOU_ZCRX: + pool->mp_ops = &io_uring_pp_zc_ops; + break; +#endif default: err = -EINVAL; goto free_ptr_ring;
--
2.39.3